crash: cannot resolve "init_level4_pgt

[Ricky Wang]

Ubuntu version:
$ lsb_release -rd
Description: Ubuntu 17.10
Release: 17.10

Package version:
$ apt-cache policy crash
crash:
  Installed: 7.1.9-1
  Candidate: 7.1.9-1
  Version table:
 *** 7.1.9-1 500
        500 http://cn.archive.ubuntu.com/ubuntu artful/main amd64 Packages
        100 /var/lib/dpkg/status

The error:
$ sudo crash /usr/lib/debug/boot/vmlinux-4.13.0-17-generic
crash 7.1.9
Copyright (C) 2002-2016 Red Hat, Inc.
Copyright (C) 2004, 2005, 2006, 2010 IBM Corporation
Copyright (C) 1999-2006 Hewlett-Packard Co
Copyright (C) 2005, 2006, 2011, 2012 Fujitsu Limited
Copyright (C) 2006, 2007 VA Linux Systems Japan K.K.
Copyright (C) 2005, 2011 NEC Corporation
Copyright (C) 1999, 2002, 2007 Silicon Graphics, Inc.
Copyright (C) 1999, 2000, 2001, 2002 Mission Critical Linux, Inc.
This program is free software, covered by the GNU General Public License,
and you are welcome to change it and/or distribute copies of it under
certain conditions. Enter "help copying" to see the conditions.
This program has absolutely no warranty. Enter "help warranty" for details.

GNU gdb (GDB) 7.6
Copyright (C) 2013 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law. Type "show copying"
and "show warranty" for details.
This GDB was configured as "x86_64-unknown-linux-gnu"...

WARNING: kernel relocated [654MB]: patching 95415 gdb minimal_symbol values

crash: read error: kernel virtual address: ffffffffaac47710 type: "page_offset_base"
crash: this kernel may be configured with CONFIG_STRICT_DEVMEM, which
       renders /dev/mem unusable as a live memory source.
crash: trying /proc/kcore as an alternative to /dev/mem

crash: cannot resolve "init_level4_pgt"

Reported also in:
https://bugzilla.redhat.com/show_bug.cgi?id=1516954

Fixed in:
https://github.com/crash-utility/crash/commit/a16324a2f05c0947a83e26a5de7c756de4603da9#diff-2e50715241f69338dda2b8adf90db04a

How to fix:
Please upgrade the package to latest crash version (7.2.0).

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[dann frazier (dannf)]

7.2.9 is in impish, so marking Fix Released